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Finding the Fourth Proportional to 632,130, 872,339.32 and 345,650.28

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Solution

The fourth proportional to 632,130, 872,339.32 and 345,650.28 is: 476,997.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,130 : 872,339.32 = 345,650.28 : x
  2. Step 2: Convert to fraction form
    632,130/872,339.32 = 345,650.28/x
  3. Step 3: Cross multiply
    632,130x = 872,339.32 × 345,650.28
  4. Step 4: Simplify right side
    632,130x = 301,524,330,213.01
  5. Step 5: Solve for x
    x = 301,524,330,213.01/632,130
  6. Step 6: Final answer
    x = 476,997.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.